Unit5Nature'sTemper(第3课时)SectionA4a-4d课件人教版英语八年级下册

Nature’sTemperNature’sTemperNature’sTemperSectionA–Whathappensduringanaturaldisaster?Unit5八年级下册英语人教版第三课时4a-4d01LearninggoalsLearnnewwords:power,soundly,thick,beat,hide,tornado.Talkaboutacontinuousactionataparticulartimeinthepast.Learninggoals1202Warmingup1.I________16yearsoldthisyear.2.I________15yearsoldlastyear.3.How________theweathertoday?4.How________theweatheryesterday?5.They________goodfriends.6.They________goodfriendsthreeyearsago.amwasiswasarewereFillintheblankswith“be”.写出过去式growgrewtelltakethinkgetringshoptoldtookthoughtgotrangshoppedbecomerunfallbuymakecutsleepranfellboughtmadecutbecamesleptmeanflyheareatgoleavemeantflewheardatewentleftWhatwas/were...doingat6:00lastnight?I/He/Shewas/Theywere...03GrammarWhatwereyoudoingwhileitwassnowingheavily?Iwastravellingonthetrainthen.Whatwereyourfamilydoingwhenthetyphoonhit?MychildrenandIwerereadingtogether.Whenmyneighbourcalled,myfamilywerehavingdinner.Weweredrivinghomewhenthestrongwindsstarted.Whileweweredrivinghome,thestrongwindsstarted.Itwasraininghardwhileweweredrivingback.Readthesentences.Underlinetheverbswhichshowanongoingactionin

thepast.4a以when和while引导的时间状语从句1.1)延续性动词和非延续性动词延续性动词指动作可以延续一段时间，而不是瞬间结束。如：work、study、drink、eat等。非延续性动词指动作极为短暂，瞬间结束。如：start、begin、hit、jump、knock等。2)when表示“当……的时候”。从句中既可用延续性动词，又可用非延续性动词，这些动词既可以表示动作，又可表示状态。从句中动作既可和主句的动作同时发生，又可在主句的动作之前或之后发生。如：MarywashavingdinnerwhenIsawher.Theboywasstillsleepingwhenhismothergothomeyesterdaymorning.3)while表示“在……的时候”、“在……期间”。它强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中。while从句中必须是表示动作或状态的延续性动词。如：TheweatherwasfinewhilewewereinBeijing.ShecalledwhileIwasout.Whiletheboyswereplayingfootball,itrained.如果主句的动作在从句的动作过程中发生，从句常用进行时。如:1.概念：表示过去某一时刻或某段时间内正进行的动作。2.构成：was/were+动词现在分词3.用法：A：表示某一时刻正进行的行为，与特定的过去

时间状语连用，常见的时间有：at8lastnight,

atthistime,atthattime,atthatmoment等。过去进行时2.e.g.Whatwereyoudoing

at10o’clockyesterdaymorning?Iwaswritingalettertomyfatheratthatmoment.B：表示过去某段时间内正进行的动作。e.g.Wewerebuildingahouselastwinter.Theywerewaitingforyouyesterday.否定句和疑问句：e.g.Wewerenotsleepingathome.

Washefeelingwell?现在分词的构成3.1)一般动词在词尾加-ing，如：go→going2)以不发音字母e结尾的动词，

先去掉e，再加-ingcome→coming

make→making

write→writing3)以重读闭音节结尾的动词，如果末尾以一个辅音字母结尾，应先双写这个字母，再加-ing，x和w结尾的除外。get→getting

swim→swimming

show→showing4)以字母y结尾的单词，直接加-ing。如：5)以字母ie结尾的动词，变ie为y，再加-ing。6)以元音字母加e结尾，或以e结尾，且e发音的动词，直接加-ing。

carryingplayingstudying

die→dying

lie→lying

see→seeingbe→being1)一些动词，如see、hear、love、like、know、remember、understand、have等表示感情、知觉和状态的词，一般不用于进行时态。2)在there和here引起的句子中，常用一般现在时代替现在进行时。使用进行时态的注意事项4.e.g.Herecomesthebus.

Theregoesthebell.1)过去进行时表示过去某一时刻或某一段时间正在进行的动作，而一般过去时则表示在过去某个时间发生过的动作或存在的状态。如：过去进行时和一般过去时的区别5.Theywerewritingletterstotheirfriendslastnight.昨晚他们在写信给他们的朋友。Theywroteletterstotheirfriendslastnight.他们昨晚写了信给他们的朋友。(没有说明信是否写完)(表达了他们已写好的意思，整个写的过程已完成)2)当动作延续较长时间时或表示厌烦、赞美等感情色彩时，常用过去进行时表示。如：Hewasthinkingmoreofothersthanofhimself.他考虑别人的比考虑自己的多。Theboywasalwaysmakingtroublethen.那时，他总是惹麻烦。(表示说话者赞扬的口气)(表示说话者厌烦的口气)现在进行时含义：表示现在正在进行的动作。结构：is/am/are+doing例句：IamhavinganEnglishclass.

过去进行时含义：表示过去某个时刻正在进行的动作。结构：was/were+doing例句：IwashavinganEnglishclassatthistimeyesterday.—Whydidn’tyouopenthedoorforme,Jim?—I

clothesinthebathroom.Ididn’theartheknock.A.amwashing B.havewashedC.waswashingD.washed中考链接——吉姆，你为什么没有给我开门？——（当时）我在浴室洗衣服，没有听到门铃声。过去的某个时间，要用过去进行时。Combineeachpairofsentencesusingwhenorwhile.4b1.Ididmyhomework.Thetyphoonlandedonthecoast.2.Thepower

wentout.MyfatherandImadedinner.3.Katewrotealetter.Herbrothercalledtowarnherofthestorm.I

was

doing

my

homework

when

the

typhoon

landed

on

the

coast.The

powerwentout

while

my

father

and

I

were

making

dinner.Kate

was

writing

a

letter

when

her

brother

called

to

warn

her

of

the

storm.go

out(火或灯光)熄灭warn

sb.

of...

警告某人…

Combineeachpairofsentencesusingwhenorwhile.4b4.Myparentspackedthesupplies.Imovedourthingsoffthefloor.5.Isleptsoundly.Itrainedcatsanddogs.While

my

parents

were

packing

the

supplies,

I

was

moving

ourthings

off

the

floor.When

I

slept

soundly,

it

was

raining

cats

and

dogs.

rain

cats

and

dogs

下倾盆大雨Completethepassagewithwas,were,when,orwhile.4cWhenJennylookedup,thickblackcloudswereforminginthesky,andtherain

beating

againsttheirroof.“Quick,thisway,”saidDad.Thefamilyrantothesaferoomatonce.

theywerewaiting,Jenny’slittlesisterstartedtocry.Dadgavehersomechocolateandtoldherthatthey

hidingfromanangrylion.Soon,shewaslaughingagain.Atlast,thestormpassed.

theysteppedoutside,theyfoundthesunshining.Peoplewereaskingoneanotheriftheyweresafewhilesome

startingtoclearthestreets.Jennysmiled.Thetornado

wasscary,butitalsobroughteveryoneclosertogether.waswereWhileWhen

were04PracticeImaginethatyouareareporter.InterviewamemberofJenny’sfamilyandfindoutwhatheorshewasdoingaroundthetimeofthetornado.4dA:Whatwereyoudoingwhenthetornadohit?B:MyfamilyandIwerehidinginasaferoom.A:Whatwereyoudoingwhileyouwerewaitingthere?B:Oh,whileI…05Languagepoints(1)[不可数名词]电力供应

powercut/failure停电Partsoftheareahadpowercutsbecauseofthestorms.

这个区域的部分地区由于暴风雨而停电了。Thepowercamebackon.电力恢复了。powern.电力供应；能量；力量(1)Thepowerwentout.停电了。(教材P454b)(3)[不可数名词]力量Theshipwashelplessagainstthepowerofthestorm.

那艘船只能任凭强大的暴风雨肆虐。(2)[不可数名词]能量nuclear/wind/solarpower核能/风能/太阳能Solarpowerisacleanenergysource.太阳能是一种清洁能源。由“sound(adj.酣畅的；可靠的；透彻的)+-ly(副词后缀)”

构成。Thebabysleptsoundlyallnight.宝宝整晚都睡得很香甜。Experimentaldatasoundlysupportedhistheory.实验数据可靠地支持了他的理论。Theteamwassoundlydefeated.该队一败涂地。(2)I

slept

soundly.

我睡得很酣畅。(教材P454b)soundlyadv.(睡觉)酣畅地；可靠地；完全彻底地(3)When

Jenny

looked

up,thick

blackcloudswereforming

in

the

sky,and

the

rain

was

beating

against

their

roof.

当珍妮抬头看时，天空中正在形成厚厚的乌云，雨水敲打着他们的屋顶。(教材P454c)lookafter照顾lookaround环顾lookthrough快速查看；浏览lookforwardto盼望lookfor寻找looklike看起来像

lookover查看；检查looko